Bacula-users

Re: [Bacula-users] bad interaction between IPV4/NAT and IPV6

2012-03-13 14:19:02
Subject: Re: [Bacula-users] bad interaction between IPV4/NAT and IPV6
From: Josh Fisher <jfisher AT pvct DOT com>
To: bacula-users AT lists.sourceforge DOT net
Date: Tue, 13 Mar 2012 14:17:06 -0400
On 3/13/2012 11:07 AM, Luc Maisonobe wrote:
> So before setting up internal names and internal DNS in addition to the
> external one, I considered using IPV6 only for my backups, since IPV6
> does run perfectly on my system. Each host can have its own address (or
> even several ones if I wanted to), firewalls can be tuned, there is only
> one address space to deal with, there are no translation tables.
> Everything looked better than DNS and NAT tricks ...

If there are no DNS records for the internal IPv4 addresses, then make 
up some names for the clients and add them to the bacula-dir server's 
/etc/hosts file. Then use {FD/SD/Dir}Addresses to have everything listen 
only on the internal IPv4 network.

Because you currently have both A and AAAA records setup for the client 
hostnames, then when given an Address=hostname line in a Client resource 
in bacula-dir.conf, bacula-dir is likely defaulting to the A record. If 
you really want to use IPv6, then add an alternate hostname for each 
client to DNS that has ONLY an AAAA record and no A record. Then using 
Address=alt-hostname in the Client resource in bacula-dir.conf so that a 
DNS lookup sees only the IPv6 address.

AFAIK, Bacula does not yet have the equivalent of FDAddresses = {} for 
the Client resource in bacula-dir.conf. I agree it is probably needed, 
because most people using IPv6 do so in a mixed IPv4/IPv6 environment. 
Also, I don't believe FDSourceAddress is suitable for a mixed IPv4/IPv6 
environment, though it is rarely needed.


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